Finding the Fourth Proportional to 79,639.38, 119,422.26 and 29,706.12
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Solution
The fourth proportional to 79,639.38, 119,422.26 and 29,706.12 is: 44,545.45
Step by Step Solution
- Step 1: Write the proportion equation
79,639.38 : 119,422.26 = 29,706.12 : x - Step 2: Convert to fraction form
79,639.38/119,422.26 = 29,706.12/x - Step 3: Cross multiply
79,639.38x = 119,422.26 × 29,706.12 - Step 4: Simplify right side
79,639.38x = 3,547,571,986.23 - Step 5: Solve for x
x = 3,547,571,986.23/79,639.38 - Step 6: Final answer
x = 44,545.45
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.